• Starrett Indicator backs are well designed
• All Steel Construction

Featuring a universal ball joint attached to the end of a gooseneck shank, these attachments make it possible to position an AGD indicator at any desired setting. The indicator can be rotated 360 Deg and angularly up to 90 Deg and locked in the desired position by tightening a single knurled nut. Straight shank is 3/8" (9.5mm) in diameter. for No. 656 Series.